smb: client: fix double-free in SMB2_ioctl() replay
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.5%
exploitation probability
0.5%top 63% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix double-free in SMB2_ioctl() replay
A response-bearing attempt can return a replayable error and free its
response buffer. If SMB2_ioctl_init() fails before the next send, cleanup
retains the previous buffer type and frees that response again.
Reset response bookkeeping before each attempt to prevent the stale free.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0be4bc64882edaefaaee8d1e27d083643eb778e6https://git.kernel.org/stable/c/276c8efbc49f9303ac76d0d4deab7128581b0f3bhttps://git.kernel.org/stable/c/96fcfc8ae7359346156e492ca610e830d2649ad6https://git.kernel.org/stable/c/f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9https://git.kernel.org/stable/c/fc65ffb4ef1bf540da16b17c225ae51091e07d72